And we can't specify an --config `config` argument. In this case vzctl
chooses

a default config file (a value of CONFIG variable from /etc/vz/vz.conf).
But there are cases when we want to specify a config file directly, as in
# vzctl create $ctid --ostemplate `ostemplate` --config `config`

I think, that we can try to use the same `ostemplate` name as --config
value, if corresponding template exists,
i.e., if there is a file /etc/vz/conf/ve-`ostemplate`.conf-sample,
libvirt will run a command